Tumor Enucleation Research Articles

The short-term outcomes of laparoscopic enucleation of pancreatic tumors with exposing the Wirsung duct.

It is widely believed that the prerequisite for safely performing enucleation is that the distance between the tumor and the main pancreatic duct (MPD) is at least 2-3mm. However, enucleating a deep pancreatic tumor adjacent to the MPD remains challenging, particularly when exposure or repair of the MPD is necessary. This study reported our initial experience with this procedure and demonstrated the feasibility and safety of the MPD exposure or repair. Patients who underwent laparoscopic enucleation (LapEN) with exposing the MPD from January 2017 to August 2023 were collected and analyzed in this retrospective cohort study. Data from procedures of laparoscopic middle pancreatectomy (LMP) and LapEN for superficial tumors were collected for comparative analyses. A total of 26 patients were enrolled, 27 tumors were enucleated. Tumor located in the pancreatic head and neck (n = 20), and the body (n = 7). The mean tumor size, operating time, and blood loss were 2.3cm, 163min, and 63ml, respectively. MPD injuries occurred in 8 cases due to the need for complete tumor resection, which were repaired or reconstructed using 6-0 PDS-II with or not inserting a plastic stent. 10 cases (38.5%) developed surgical-related complications, seven (26.9%) were classified as Clavien-Dindo grade I, and three (11.5%) were Clavien-Dindo grade IIIa. Biochemical leakage occurred in 16 cases (61.5%), clinically relevant pancreatic fistula (CR-POPF) occurred in 10 cases (38.5%). Two patients (7.7%) experiencedpost-pancreatectomy hemorrhage. Further analyses indicated LapEN with MPD exposure had a longer operating time and higher incidence of CR-POPF compared to LapEN for superficial tumors, but a shorter operating time and less blood loss compared to LMP (P < 0.05). Laparoscopic enucleation with exposing the MPD is feasible and safe with the support of precise preoperative assessments, meticulous intraoperative dissection, well familiarity with the anatomy of the MPD, and excellent surgical skills.

Clinical application and efficacy analysis of robot-assisted laparoscopic tumor enucleation combined with tumor aspiration in the treatment of renal hilar angiomyolipoma

BackgroundFor renal hilar angiomyolipoma, general surgical resection is often quite challenging. The aim of this study is to evaluate the safety and efficacy of an innovative robot-assisted laparoscopic strategy that combines tumor enucleation with tumor aspiration in the treatment of renal hilar angiomyolipoma.MethodsThe clinical data of 38 patients with renal hilar angiomyolipoma who went through robotic tumor enucleation combined with tumor aspiration in the Department of Urology, the Affiliated Hospital of Nanjing University Medical School, from December 2019 to December 2022 were retrospectively analyzed. The basic characteristics, the perioperative variables, intraoperative procedures, and postoperative complications were all recorded. Patients were followed up to evaluate the angiomyolipoma recurrence and the renal function by urologic CT or ultrasound and renal function tests.ResultsAll surgeries were successfully completed without conversion to radical nephrectomy or open surgery. One patient developed urinary extravasation 10 days after surgery, and was readmitted to the hospital for transurethral ureteral stenting considering the injury of the renal collecting system. The median operative time was 181.5 (123.8-206.3) min, the warm ischemia time was 20.0 (17.3–24.0) min, the blood loss was 125 (100.0-262.5) ml, and no patients received blood transfusion during and after surgery. The median hospitalization time was 7.0 (6.0–9.0) days, and the duration of indwelling drainage tube was 2.0 (2.0–3.0) days. The serum creatinine (Scr) on the first day, 3 months, and 6 months after surgery were 55.5 (50.8–62.8) µmol/L, 55.5 (48.0–62.0) µmol/L and 54.0 (51.8–63.5) µmol/L, respectively, and there was no significant difference compared with the preoperative level 56.0 (47.8–60.3) µmol/L. All patients were followed up after surgery, and the urinary CT scan or renal color doppler ultrasound, and renal function were reexamined. The median follow-up time of all patients was 19.0 (14.75-33.0) months, and no local recurrence of angiomyolipoma was seen in all patients.ConclusionsThe surgical strategy of robot-assisted laparoscopic tumor enucleation combined with tumor aspiration is safe and effective in the treatment of renal hilar angiomyolipoma.

Hybrid surgical approach for a large schwannoma from the cervical esophagus to the upper thoracic esophagus: a case report

BackgroundEsophageal schwannoma is an extremely rare esophageal submucosal tumor. We report a case of a hybrid surgery for a large esophageal schwannoma that had extended from the cervical to the upper thoracic esophagus by using thoracoscopic and cervical approaches.Case presentationA 58-year-old male was referred to our hospital for further examination and treatment of dysphagia and weight loss over the past 6 months. Upper gastrointestinal endoscopy revealed a 5.7-cm submucosal tumor from the cervical esophagus to the upper thoracic esophagus. The submucosal tumor was diagnosed as esophageal schwannoma by endoscopic ultrasound-guided fine-needle aspiration biopsy (EUS-FNA). Contrast-enhanced CT showed that the tumor had not invaded surrounding organs. Since the tumor extended from the cervical esophagus to the upper thoracic esophagus, we decided that it should be resected by not only the cervical but also the thoracoscopic approach. In operation, the patient was first placed in the prone position, and a thoracoscopic dissection of the upper thoracic esophagus containing the tumor was performed from the surrounding area. After changing the patient’s position from prone to supine, a cervical skin incision was performed, and we underwent the tumor enucleation. After enucleation, the esophageal wall was thinned, so the right sternocleidomastoid muscle was used to reinforce the esophageal wall. The tumor size of the specimen was 60 × 52 × 42 mm. The postoperative course was uneventful, and the patient was discharged on the 22nd day after surgery.ConclusionsEnucleation of a large esophageal schwannoma from the cervical to the upper thoracic esophagus could be safely performed using both thoracoscopic and cervical approaches. The sternocleidomastoid muscle flap is useful in the occasion considering stenosis by muscular layer suture.

Plaque Radiotherapy for Ocular Melanoma

Plaque radiotherapy is an effective treatment modality for medium-sized ocular tumors such as uveal melanoma. The authors review the available literature and concisely summarize the current state of the art of ophthalmic plaque brachytherapy. The choice of radioisotope, which includes Ruthenium-106 and Iodine-125, depends on the intended treatment duration, tumor characteristics, and side effect profiles. Ophthalmic plaques may be customized to allow for the delivery of a precise radiation dose by adjusting seed placement and plaque shape to minimize collateral tissue radiation. High dose rate (HDR) brachytherapy, using beta (e.g., Yttrium-90) and photon-emitting sources (e.g., Ytterbium-169, Selenium-75), allows for rapid radiation dose delivery, which typically lasts minutes, compared to multiple days with low-dose plaque brachytherapy. The efficacy of Ruthenium-106 brachytherapy for uveal melanoma varies widely, with reported local control rates between 59.0% and 98.0%. Factors influencing outcomes include tumor size, thickness, anatomical location, and radiation dose at the tumor apex, with larger and thicker tumors potentially exhibiting poorer response and a higher rate of complications. Plaque brachytherapy is effective for selected tumors, particularly uveal melanoma, providing comparable survival rates to enucleation for medium-sized tumors. The complications of plaque brachytherapy are well described, and many of these are treatable.

Quantifying preserved renal volume and function in patients undergoing standard partial nephrectomy vs. tumor enucleation for localized renal tumors

IntroductionRenal parenchymal volume loss from standard partial nephrectomy (SPN) is a significant prognosticator for postoperative renal function. Tumor enucleation (TE) minimizes parenchymal loss compared to SPN. Little is known regarding discrete changes in renal function associated with volume loss. We sought to quantify the differences between SPN and TE in preserving parenchymal volume and estimated glomerular filtration rate (eGFR). MethodsWe identified 420 patients who underwent robotic partial nephrectomy (SPN or TE) at our tertiary care center from 2009 to 2022. Parenchymal volumes were calculated using TeraRecon 3D reconstruction software from axial imaging performed preoperatively and within 6 months postoperatively. Renal volume preserved and renal function were evaluated with multivariable linear and logistic regression models. ResultsAt 1 year, eGFR was 7% lower in patients undergoing SPN compared to TE (P < 0.01). Across both SPN and TE, only volume of preserved parenchyma was predictive of eGFR and chronic kidney disease (CKD) progression (both P < 0.01). TE preserved more healthy parenchymal volume compared to SPN (median percentage 97.6% vs 89.2%; P < 0.001). Each 1% of volumetric loss corresponded to a 0.35% decrease in eGFR at 1 year postoperatively (P < 0.01). ConclusionsVolume of preserved renal parenchyma was the strongest factor associated with preserved eGFR and reduced odds of CKD progression. TE preserved more parenchyma than SPN, which translated to higher eGFR preservation at 1 year postoperatively.

The outcomes of robotic-assisted enucleation for tumors located in uncinate process of pancreas in 16 cases

Objective: To summarize the experience of robot-assisted enucleation of tumors located in uncinate process of pancreas. Methods: This is a retrospective case series study. The clinical data of patients with robot-assisted enucleation of tumors located in the uncinate process of pancreas at the Department of Gastroenterology and Pancreatic Surgery,Zhejiang Provincial People's Hospital from June 2019 to December 2023 were retrospectively analyzed. A total of 16 cases were enrolled,including 10 males and 6 females,with an age(M(IQR)) of 56(21)years (range: 28 to 77 years),and body mass index of 22.4(2.3)kg/m2 (range:19.8 to 25.6 kg/m2). Follow-up was asked every 6 to 12 months after the first 3-month postoperative follow-up through out-patient service or via telephone. Results: In total 16 cases,there were 11 cases with pancreatic enucleation,and 5 cases with resection of the uninate process. The operation time was 70(60) minutes (range: 40 to 165 minutes),and the blood loss was 30(13)ml (range: 10 to 80 ml). The rate of pancreatic fistula was 5/16. The length of stay was 8(6)days (range: 5 to 33 days). The pathological finding included non-functional neuroendocrine tumor(n=3),insulinoma(n=2),introductal papillary mucinous neoplasm (n=5),solid pseudopapillary neoplasm (n=2),mucinous cystadenoma (n=1),serous cystadenoma (n=2),pseudocyst (n=1). Follow-up as of March 12, 2024, the follow-up time was 16(12)months (range: 3 to 41 months). All patients had no new onset diabetes and no dyspepsia. Conclusion: Robot-assisted surgical system can be used for local resection of uncinate process tumors of pancreas,and the quality of life of patients can be improved.

Surgical management of pancreatic neoplasms in children: a single-institution experience over 15 years.

Pancreatic neoplasms are rare among children and very few studies have reported on surgical outcomes for pediatric pancreatic neoplasms. Therefore, we aimed to describe patient and tumor characteristics and report on the surgical outcomes of pediatric pancreatic neoplasm. In this retrospective single-center study, we reviewed and analyzed the data of patients who underwent surgery for pediatric pancreatic neoplasms at Severance Children's Hospital between January 2007 and December 2022. Clinical data including demographics, surgical procedures, and postoperative and long-term outcomes were evaluated. A total of 28 patients underwent surgical treatment for pancreatic neoplasms with a median age of 11.7 years (range: 0.4-17.8). The most common histological diagnosis among benign tumors was solid pseudopapillary neoplasm (SPN), which occurred in 20 patients (71.4%). This was followed by a mucinous cyst, nesidioblastosis, pseudocyst, duplication cyst, and benign cyst, each occurring in one patient (3.5%). Regarding malignant tumors, pancreatoblastoma, solid pseudopapillary carcinoma, and malignant pheochromocytoma were noted in one patient each (3.5%). Tumor locations included the head in 4 patients (14.2%), the body in 7 (25%), and the tail in 16 (57.1%), and was diffuse in 1 (3.5%). The most common surgical resection range was distal pancreatectomy, found in 22 patients (78.5%), followed by pylorus-preserving pancreaticoduodenectomy, found in 2 (7.2%); duodenum-preserving pancreatic resection, central pancreatectomy, tumor enucleation, and near-total pancreatectomy were performed in one patient each (3.5%). Overall, 4 patients developed grade B or C postoperative pancreatic fistulas, and 1 experienced postoperative mortality due to uncontrollable bleeding. The mean follow-up period was 6.1 years (range: 1-15.6 years), during which no significant impact on growth after surgery was detected. Among the 20 patients with SPN, tumor rupture occurred in 4 (20%), among whom 2 experienced tumor recurrences. Histological diagnosis of benign tumors was predominant in this case series and various extents of surgical resection were performed. Surgical treatment for pediatric pancreatic neoplasms appears to be safe and effective. However, considering the long-term prognosis of these patients, it is essential to determine the appropriate extent of surgical resection based on the location of the tumor.

Laparoscopic enucleation of tumors embedded in the pancreatic head: Safety and feasibility

BackgroundSurgical treatment for a benign or low-grade malignant tumor in the pancreatic head remains a challenge at present. As an organ-sparing procedure, enucleation is ideal. However, it is still controversial whether laparoscopic enucleation (LapEN) can be safely performed for a pancreatic head tumor, especially a deeply embedded one. MethodsThe cases who underwent LapEN of a pancreatic tumor from January 2014 to September 2022 in our hospital were collected and analyzed. ResultsA total of 151 cases were collected. The incidence of pancreatic fistula (PF, grade B) was 21.9%. No patient developed PF (grade C) or died. Compared with enucleating a tumor in the distal pancreas (N = 98), enucleating a tumor in the pancreatic head (N = 53) showed a longer operation time and a higher incidence of conversion. The cases with a tumor in the pancreatic head were then divided into the group with a deeply embedded tumor (N = 32) and the group with a superficial tumor (N = 21). The embedded group had a smaller tumor size and a higher proportion of insulinoma. There were no statistical differences in the parameters of operation time, blood loss and incidence of complications between the two groups. The outcomes of enucleating a tumor deeply embedded in the proximal and distal pancreas were further analyzed, which indicated no statistical differences in clinical parameters between the two groups. ConclusionLapEN of a tumor in the pancreatic head is feasible and safe, even for a deeply embedded tumor.

The evolution of tumor enucleation partial nephrectomy: A comparison of perioperative outcomes for sutureless hemostatic bandage as an alternative to standard renorrhaphy.

The standard approach to hemostasis during partial nephrectomy (PN) is to perform suture renorrhaphy (SR). Application of a hemostatic bandage (HB) is an alternative to minimize blood loss and devitalized renal parenchyma. We aim to evaluate perioperative outcomes of PN with tumor enucleation (TE) comparing SR to HB. We analyzed a retrospective cohort of 195 patients undergoing robot-assisted laparoscopic PN with TE performed at a tertiary referral center (2012-2022). Hemostasis was obtained with SR in 54 patients while 141 patients underwent application of HB consisting of Surgicel®, Gelfoam® soaked in thrombin, and Floseal®. SR patients had tumors of greater complexity by RENAL nephrometry score compared to HB patients (p < 0.001). Operative time (141 vs. 183 min, p < 0.001), warm ischemia time (11.6 vs. 24.2 min, p < 0.001), estimated blood loss (37 vs. 214 mL, p < 0.001), and length of stay (1.2 vs. 1.8 days, p < 0.001) favored HB. There was no significant difference in Clavien-Dindo grade ≥3 complications (p = 0.22). Renal function was comparable with mean estimated glomerular filtration rate decrease of 0.66 and 0.54 mL/min/1.73 m2 at 3 months postoperatively for HB and SR, respectively (p = 0.93). Application of an HB is a safe alternative to SR for hemostasis following PN with TE in appropriately selected patients.

Predictive value of neutrophil to lymphocyte ratio, platelet to lymphocyte ratio, and systemic inflammatory index for detection of recurrence of pleomorphic adenoma of the major salivary glands: a multicenter study

BackgroundThe aim of this study was to investigate the correlation between inflammatory biomarkers such as the systemic immune-inflammation index (SII), the neutrophil-to-lymphocyte ratio (NLR) and the platelet-to-lymphocyte ratio (PLR) and the recurrence of pleomorphic adenomas (PAs). MethodsRetrospective multicenter study. 608 patients diagnosed with PA and treated by tumor enucleation were included in the analyses. The patients. were extracted from a twenty-year database of two referral centers (January 2000 to January 2020). Data about age, sex, voluntary habits, tumor characteristics, tumor treatment and values of NLR, PLR and SII were collected. A receiver operating characteristic (ROC) curve was used to calculate the optimal cut-off values for SII, PLR and NLR. A linear regression model (LRM) and a non-linear logistic regression model (NLRM) were implemented for NLR, PLR and SII. ResultsAll three inflammatory parameters were statistically significant correlated to the recurrence of the tumor. The best performance was achieved by NLR (cut-off 2.960) with AUC = 0.91, accuracy of 96.1%, sensitivity of 78.4% and specificity of 97.2%, PPV = 64.4% and NPV = 98.6%. LRM and NLRM including all hematological parameters did not improve performance in terms of recurrence detection. ConclusionThe use of three inflammatory biomarkers could be a useful tool to predict recurrence of tumor in case of PA ≤ 3 cm. NLR in particular could be sensitive with a cut-off of 2.960. The use of NLR, PLR and SII could be a good reference point for surgical decision making and follow-up in clinical practice.

VJY26 3D-guided robot-assisted off-clamp enucleation of endophytic tumor in solitary functioning kidney

VJY26 3D-guided robot-assisted off-clamp enucleation of endophytic tumor in solitary functioning kidney

PE062 Sutureless Robotic-Assisted Tumor Enucleation (RATE) for renal masses: Results of an initial single-center experience

PE062 Sutureless Robotic-Assisted Tumor Enucleation (RATE) for renal masses: Results of an initial single-center experience

Robotic-assisted enucleation for renal masses: A comparison of on-clamp and off-clamp approach.

In surgically excising renal masses, studies have demonstrated that tumor enucleation is an effective option. However, there is limited literature comparing off-clamp to on-clamp tumor enucleation. We retrospectively reviewed the charts of 189 patients who underwent robotic-assisted laparoscopic partial nephrectomy via tumor enucleation by a single surgeon from March 2012 and April 2022. Patients were stratified based on use of renal hilar clamping intraoperatively. Surgical, oncologic, and renal functional outcomes were captured. Variables were analyzed and compared between the two groups using Student's T-tests and Chi-square tests. Of 189 procedures analyzed, 124 were performed on-clamp and 65 were performed off-clamp. There were no differences in patient demographics or average length of follow-up. There were no differences in estimated blood loss, complications, or hospital length of stay. Recurrence rates were similar for the two groups. The absolute difference in estimated glomerular filtration rate change between the two groups at time of first follow-up was not significant (p = 0.25). There is no significant difference in perioperative outcomes such as surgical time, blood loss, or complications between the two groups. Furthermore, there was no significant difference in postoperative kidney function between the two techniques.

Successful thoracoscopic enucleation of a calcifying fibrous tumor of the lower mediastinum in a young woman

BackgroundCalcifying fibrous tumor (CFT) arising from the pleura is a relatively rare benign lesion in young and middle-aged adults. We report a 31-year-old woman with pleural CFT who underwent successful complete thoracoscopic enucleation.Case presentationAn asymptomatic woman presented with a mass in the right lower lung field that was incidentally detected on a chest X-ray during a routine medical checkup. Chest computed tomography showed a well-defined mass in the lower mediastinum, with a maximum diameter of approximately 5.5 cm. Esophagogastroduodenoscopy showed no abnormal findings in the esophagus. An endoscopic ultrasonography (EUS) revealed a well-defined tumor with no internal blood flow. EUS-fine needle aspiration failed to establish a definitive diagnosis. Therefore, thoracoscopic tumor enucleation was performed for diagnostic and therapeutic purposes. Based on the histopathological findings of the resected specimen, the presence of a tumor with a high fibrous component in a young woman, and the identification of granulomatous calcifications, a diagnosis of CFT was established.ConclusionsComplete thoracoscopic tumor enucleation was successfully performed for CFT arising from the pleura in a young adult woman.

Insulinoma: case report

The present study aims to depict a case of insulinoma in a 31-year-old woman, a patient of a private hospital in Maceió, state of Alagoas, presenting informative data regarding the medical follow-up performed during her treatment. She presented signs of mental confusion, behavioral changes, weakness, blurred vision, hypoglycemia, and loss of consciousness. Subsequently, a computed tomography (CT) scan of the abdominal region revealed a suggestive lesion of insulinoma. An endoscopic pancreatic ultrasound was then performed to evaluate the situation of the lesion. A partial pancreatectomy was performed, with enucleation of the pancreatic tumor by videolaparoscopy. The patient was diagnosed with a well-differentiated neuroendocrine tumor, grade 1 (NET G1), and is currently undergoing oncological follow-up every six months, with laboratory and imaging exams, without presenting any pathological or clinical alterations to date.

Thoracoscopic enucleation of an esophageal glomus tumor in the prone position: a case report and literature review

BackgroundGlomus tumors (GT) generally occur in the skin. However, esophageal GT, an extremely rare condition, has no established standardized treatment guidelines. Herein, we report the case of an esophageal GT successfully removed by thoracoscopic enucleation in the prone position using intra-esophageal balloon compression.Case presentationA 45-year-old man underwent an annual endoscopic examination and was found to have a submucosal tumor in the lower esophagus. Endoscopic ultrasound (EUS) revealed a hyperechoic mass originating from the muscular layer. Contrast-enhanced computed tomography identified a 2 cm mass lesion with high contrast enhancement in the right side of the lower esophagus. Pathologic findings of EUS-guided fine needle aspiration biopsy (EUS–FNA) revealed round to spindle shaped atypical cells without mitotic activity. Immunohistochemically, the tumor was positive for alpha-smooth muscle actin, but negative for CD34, desmin, keratin 18, S-100 protein, melan A, c-kit, and STAT6. He was diagnosed with an esophageal GT and a thoracoscopic approach to tumor resection was planned. Under general anesthesia, a Sengstaken–Blakemore (SB) tube was inserted into the esophagus. The patient was placed in the prone position and a right thoracoscopic approach was achieved. The esophagus around the tumor was mobilized and the SB tube balloon inflated to compress the tumor toward the thoracic cavity. The muscle layer was divided and the tumor was successfully enucleated without mucosal penetration. Oral intake was initiated on postoperative day (POD) 3 and the patient discharged on POD 9. No surgical complications or tumor metastasis were observed during the 1-year postoperative follow-up.ConclusionsAs malignancy criteria for esophageal GT are not yet established, the least invasive procedure for complete resection should be selected on a case-by-case basis. Thoracoscopic enucleation in the prone position using intra-esophageal balloon compression is useful to treat esophageal GT on the right side of the esophagus.

A Bosniak III Cyst Unmasking Tubulocystic Renal Cell Carcinoma in an Adolescent: Management with Selective Arterial Clamping and Robotic Enucleation

The Bosniak classification of renal cysts aims to provide a probabilistic risk assessment indicating the likelihood of malignancy from imaging findings. Originally designed to classify adult renal cysts based on computed tomography findings, the Bosniak classification has been extended to pediatric patients, with some adjustments made with the aim of accommodating magnetic resonance imaging (MRI) and ultrasonography (US). Bosniak IV lesions are rare in adolescents, indicating localized renal cell carcinoma and requiring surgical intervention. In contrast, Bosniak III lesions can be treated conservatively, although there is a lack of specific guidelines on their management. We present a case of a 14-year-old boy with a Bosniak III lesion, which was incidentally detected during the US evaluation of a left varicocele. After a 12-month follow-up, MRI revealed progression to a Bosniak IV cyst. Robot-assisted tumor enucleation was performed with selective artery clamping when the patient was 15. Histopathology showed tubulocystic renal cell carcinoma without adverse features. Immunocytochemistry supported a favorable prognosis of this rare tumor (&lt;1% of renal tumor), thus obviating the need for adjuvant treatment. At the 18-month follow-up, no recurrence or distant metastasis were observed. This case highlights the importance of an aggressive treatment in persistent Bosniak III and Bosniak IV renal cysts in children and adolescents and the necessity to offer a nephron-sparing surgery.

Poorly differentiated mucinous carcinoma of the ascending colon complicated by bilateral ovarian mature cystic teratomas in a 17-year-old female patient: a case report

BackgroundColorectal cancer (CRC) is one of the most common cancers worldwide, and screening colonoscopy has led to a decreasing incidence rate. However, the incidence of CRC is increasing among young people, especially adolescents and young adults (AYAs) who are not routinely screened. Although CRC is the fourth most common cancer among AYAs, it is extremely rare. In younger patients, CRC is often diagnosed later, and the proportion of patients with advanced CRC is higher than that in older patients. We herein present a case of poorly differentiated mucinous carcinoma of the ascending colon complicated by bilateral ovarian mature cystic teratomas (MCTs) in an AYA.Case presentationA 17-year-old female patient presented with a chief complaint of abdominal pain and diarrhea that had persisted for more than 3 years. Colonoscopy revealed circumferential wall thickening of the ascending colon, and colonic biopsy revealed a mucous mass and findings of adenocarcinoma, predominantly signet ring cell carcinoma. Abdominal computed tomography (CT) and pelvic magnetic resonance imaging (MRI) showed bilateral ovarian tumors. Laparoscopic right hemicolectomy and enucleation of bilateral ovarian tumors were performed. Although the ascending colon cancer formed a large mass, there were no signs of peritoneal dissemination or direct invasion to the surrounding organs. Microscopically, the ascending colon was a poorly differentiated mucinous carcinoma with signet ring cell carcinoma and lymph node metastasis (9/42). The ovarian tumors were diagnosed as MCTs without any malignant components. The pathological diagnosis was ascending colon cancer (pT4aN2bM0, pStage IIIC) and bilateral ovarian MCTs. Microsatellite instability (MSI) testing was negative, and there were no gene mutations in either RAS or BRAF. Postoperative adjuvant chemotherapy with oxaliplatin and 5-FU was started.ConclusionsWe presented a case of locally advanced ascending colon cancer in a 17-year-old female patient. CRC rarely occurs in AYAs. However, the incidence has gradually increased in recent years. It should be considered as a differential diagnosis for young patients with long-term abdominal symptoms of unknown cause.

Premalignant cystic neoplasms and neuroendocrine tumors of the pancreatic head-Is the Kausch-Whipple resection an adequate treatment?

Currently, the most frequently used surgical treatment for symptomatic, benign, premalignant cystic and neuroendocrine neoplasms of the pancreatic head is the Whipple procedure or pylorus-preserving pancreatoduodenectomy (PD). However, when performed for treatment of benign tumors, PD is amultiorgan resection involving loss of pancreatic and extrapancreatic tissue and functions. PD for benign neoplasm is associated with the risk of considerable early postoperative complications and an in-hospital mortality of up to 5%. Following the Whipple procedure anew onset of diabetes mellitus is observed in 14-20% and new exocrine insufficiency in 25-45%, leading to metabolic dysfunction and impairment of quality of life persisting after resection of benign tumors. Symptomatic neoplasms are indication for surgery. Patients with asymptomatic pancreatic tumors are treated according to the criteria of surveillance protocols. The goal of surgical treatment for asymptomatic patients is, according to the guideline criteria, interruption of the surveillance program before the development of an advanced stage cancer associated with the neoplasm. Tumor enucleation and duodenum-preserving pancreatic head resection, either total or partial, are parenchyma-sparing resections for benign neoplasms of the pancreatic head. The first choice for small tumors is enucleation; however, enucleation is associated with an increased risk of pancreatic fistula B + C following pancreatic main duct injury. Duodenum-preserving total or partial pancreatic head resection has the advantage of low postoperative surgery-related complications, amortality of < 0.5% and maintenance of the endocrine and exocrine pancreatic functions. Parenchyma-sparing pancreatic head resections should replace classical Whipple procedures for neoplasms of the pancreatic head.

Robotic thoracic surgery using the single-port robotic system: Initial experience with more than 100 cases.

This study aimed to report the initial experiences of 115 patients who underwent robotic thoracic surgery using the da Vinci single-port robotic surgical system (Intuitive Surgical). Robotic thoracic surgery using the da Vinci single-port robotic surgical system was performed on 115 patients between November 2020 and June 2023. Patient characteristics, intraoperative outcomes, and postoperative outcomes were analyzed retrospectively. The type of surgeries included thymectomy, mediastinal mass excision, anatomical pulmonary resection (including lobectomy and segmentectomy), esophagectomy, and enucleation of esophageal submucosal tumors in 41, 13, 54, 5, and 2 patients, respectively. The mean total operative time and chest tube duration for different procedures were as follows: thymectomy, 152.9. ± 6.7minutes and 1.2±0.5days; mediastinal mass excision, 93.3±26.5minutes and 1.0±0days; anatomical pulmonary resection, 187.2±55.8minutes and 2.5±1.5days; esophagectomy, 485±111.9minutes and 12±4.6days; and enucleation of esophageal submucosal tumors, 170±30minutes and 5.5±0.5days, respectively. Conversion to a thoracotomy or sternotomy was not required. Conversion to video-assisted thoracic surgery occurred in 1 patient, and an additional port was applied in 2 patients. Two patients experienced postoperative complications greater than grade IIIa. Robotic thoracic surgery using the da Vinci single-port robotic surgical system is feasible and safe in various fields of thoracic surgery, including complex procedures such as anatomical pulmonary resection and esophagectomy. More complex thoracic surgeries can be performed with the continuous advancement and innovation of instruments in robotic systems.